Dust-guard



' R. F. DARBY.

DUST GUARD. APPLLAON FILED JULY I8 i919.

1,356,046, muted one 19, 1920.

2 SHEETS--SHEET l.

Q c per? i R. F. DARBY.

DUST GUARD.

APPLlcArloN FILED :uu/18,1919.

l UNlTED STATES ,inirisnrl oFFicii.v

ROBERT F. DARBY,l 0F AYOI\`I'KIEIR,S, YORK.

i DUST-GUARD.

Specification of ietters Patent.

Patented oct. 19, 1920.

Application filed Ju1yr18,1919. Serial No. 311,695. Y

To all whom t may concern:

Be it known that I, Ronnn'i F. DARBY, a citizen of the United States, and aresident of Tonliers, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Dust- G-uards, of which the following is av speciiication.

This invention has for its main object to improve the construction of dust-guards for car axle journal boxes andto provide a device of unusual simplicity, lightness and strength, readily engageable in car axle boxes of standard construction whereby dust, grit, etc., are excluded, and waste of lubricant prevented.

Another object` is to provide Aa sectional p eating oils, thereby avoiding the use ofV i rivets, screws `and other analogousfastenings, while another form is comprisedof a single 'sectional plate and bearing` ring united thereto. r

These objects are attained by the novel construction and combination of partsliereinafter described and shown in-the accompanying drawings, Vforming a material" part of this disclosure, and in whichk: Figure 1`is a perspective view showing a dust-guard made in accordance with the invention.

Fig. 2 is a front elevational. view of the same, parts being broken away in order to show. the built-up construction. Fig. 3 is a vertical sectional view taken on line 3 3 of Fig. 2. j "f f Fig. 4 is an enlarged fragmentary transverse sectional view taken online 4 4 of Fig. 1. l'

Fig. 5 is a front elevational view showing a modified form of dust guard construction. Fig. 6 is a vertical sectional view taken on line 6-6 of Fig. 5, and j 'j A` Fig. '7. is a top plan view of the same.' v

von one-side, is the segment 17 parallel with its upper edge.

Referring to the drawings in detail, the numeral 10 designates a conventional type of c ar axlefbox, the saine being provided at its inner or rear end with Aafcliamberecl recess 11 through which extends the stepped portion 12'of the axle 13, the/same also passing through the dust-guard normally contained within the chamber. j The dust-guard as shown in Fi'gsyl to 4, is formed in two plate sections, the upper section 15 being rectangular and the lower, corresponding section 16, semi-circular or otherwise to conform to the axle-box. i i

United `with the upper platesection '15, of a ring,

its end 17 extending beyond the plane of its diametral center line, partially overlying the lower plate section 16 `and abutting against the corresponding, but" foreshortened, ends ofthe lower ring segment 18, united'to the side of the lower section 16.

The sections 1 5 and 16 are composed of platesor layers of veneer, a, b and c, the

outer'layers being so arranged as to present the grain of the wood transversely to the center layerV I), while the ring yis similarly composed kof a' central, washer-like plate e, `faced by plates (l and Vf, 'the center plate being relatively thicker in order to properlv fill the space in the chamber 11.

The 4opening 19, through which the axle 12 passes, is concentric-with the ringelee,

ments vand the joint between juxtaposed edges of the plate sections 15 .and 16 is in the plane of the centerfof the opening 19, the Vextensions17 acting to maintain the sections in lateral register in one direction.

These sections are further held in the same level plane, and also drawn resiliently together, by a spring wire having hook-like.

"inturned terminals 2O bent to y extend radi-l ally into the lower ring segment 18, on, opposite sides,below the center and so close tothe plate sections 15 and 16 asto,` contactwith them. n

Thesel terminals 2O are formed with arms Y 21 extending in parallel along the side edges of the section15, the arms merging by bent corners 22 into a spring cross-bar 23 bent" slightly downward into a straight central y portion 24, engageable in a groove 25 formed tangentially in the periphery of" the segment 17 ,closely adjacent to the plate 15, and

Thus 'the wire 21 performs a double function; that of guiding the sections laterally,

and drawing them together by reason of the integrally formed spring-bar 28.

It is to be noted that no rivets, screws or other fastening means are employed, the only metallic part being the Wire, bent to form the elements 2O to 24 inclusive.

Extreme lightness'is attained by the use of relatively thin plate sections and the reinforcing space ring, vvhile adequate strength and freedom from warping is secured by the transverse disposition of the several layers, which are bonded together by a cement having the peculiar property of being unaffected by Water or oils, such as are used for lubricating purposes, even if subjected to the same for long periods.

ln the modification shown in Figs. 5 to 7, a relatively thin plate comprised of' sections 30 and 3l, respectively upper and lower, is used, each having in their adjacent edges equal semi-circular openings 32 and 33, of a size to clear the axle element 12.

Secured upon one side of this plate is a ring composed of upper and lower sections Bet and 35, the upper section 231i having'its ends Bei extended past the meeting line of the plate sections 30 and 3l, the opening` in the ring being of lesser diameter than that in the plate and suited to the axle element 12.

rlhe ring sections 34C and 35 are firmly secured to the plate sections 30 and 31 by any adequate fastening' means as exemplified by the screvvs 36 or analogous devices.

A spring Wire is bent to form a pair of oppositely disposed hooks 37 engageable in appropriate openings formed in the periphery of theloiver ring section 35, near its ends the Wire continuing in parallel elements 38, 'closely adjacent to the edges of the upper plate section 30, to a height above the ring, and then formed into spring coils 39 connected by a bowed portion 40, the central, straight part 4:1 of Which is in contact With the surface of the ring section 34 at its highest point, immediately over the center. l

ln order to maintain the spring vvire in engagement, in addition to the integral hooks 37, a pin 42 or the like may be inserted in the ring in contact With the part 4l, or the device previously described employed.

In this modification it is possible to use a thin metal plate Without damage to the axle, the entire Weight of the guard being borne by the relatively Wide'Wooden ring.

The foregoing disclosure is to be regarded as descriptive, rather than restrictive or limitative of the invention, which in practice may be modified in minor details Within the spirit and scopeof the appended claims.

Having thus particularly described the nature, construction and use of lthe invention, what is claimed as new and sought to be secured by Letters Patent, is

l. A dust guard comprising a Wooden plate, a spacer secured to one side of and surrounding an opening through said plate, said plate and spacer being in tivo horizontal sections, a connecting element formed of a single Wire strand resiliently constraining the sections together, and means in each section of said spacer cooperating to hold said connecting element in operative engagement.

2. A dust guard comprising a transversely bisected plate containing an opening, a split spacer ring extending therefrom having an opening of lesser diameter concentric with the opening in said plate, the joints of said ring being offset to the joints oic said plate, constituting means for holding said plate sections against lateral movement, and a single unitary element resiliently engaging the sections of' said plate in operative relation.

3. A dust-guard comprised of a sectional plate composed of a plurality of Wooden layers disposed alternately in transverse order, bonded by an impervious cement, and a unitary element resiliently maintaining the sections of said plate in juxtaposition, said element contacting with one of: the plate sections at one point and with the other section at tvvo points equi-distant from the first named point.

4. A dust-guard comprising a laminated, sectional plate, a ring segment affixed to one 100 side of said plate on each section, a bent spring Wire engaged at its ends in one of' said segments, and a loop formed in said Wire, said loop being received in a tangential groove formed in the other of said segments.

5. A dust-guard comprising a laminated Wooden plate formed in two sections and having an axle opening extending equally into each section, a laminated Wooden ring segment fixed upon each plate section enframing the mentioned opening, the ends of one of said segments overlapping the adjacent section, aspring Wire having hooked ends engaged in one of said segments, said Wire passing closely to said plate over the other segment, and a part formed with said Wire engaging in a tangential groove in the other of said segments.

6. A dust-guard comprising a horizontally sectioned plate containing a circular opening, a spacer ring secured to said plate, said ring having a smaller. opening concentric with the opening in said plate adapted to receive an axle, said plate being divided transversely in a plane co-incident with the axis of' its opening and said ring being divided in a plane parallel and below the axis, and a single retaining means for resiliently holding the sections in engagement.

7. A dust-guard comprising a relatively thin plate containing an opening, a ring secured to one side of said plate, said ring having a smaller opening concentric with the opening in said plate and receptive of an axle, said plate and ring being each in separable sections, a wire extending adjacent to said plate resting on one of the sections of said ring, means for maintaining said wire in position, spring coils formed in said wire, and hooks at the ends oi said wire engaged in the other section of said ring.

8. A dust guard comprising a laminated plate divided transversely into upper and lower symmetrical sides, the lower section being an arc, and containing equally between them a circular opening, a laminated split ring secured laterally to said plate' sections in such manner as to break joints therewith, said ring being concentric with the opening, and of lesser interior diameter, and a symmetricaly resilient clamp element engaging said ring at threer points adapted to hold the ring and plate in operative position.

9. A dust guard comprising a laminated plate divided transversely into upper and lower sections having between them a circular opening, a split spacer ring having its sections attached respectively to the sections of said plate and its joints in staggered relation to the joints of the plate, and a single unitary symmetrical spring element engaging at its center withthetop of one of the sections of said ring and at its ends with the sides of the other section thereof.

10. A dust guard comprising a laminated plate having an approximately rectangular upper section and an arcuate `lower section, the sections each containing openings which together form a circle, semiannular bands y secured concentric to said opening, the ends of said bands meeting ina different plane v from the joint of said plate sections, and a single spring wire bent to engage over one -offsaid bands and enter oppositely formed openings in the other of said bands whereby their ends are held in contact.

1l. A dust guard comprising a laminated plate having an approximately rectangular upper section and an arcuate lower section, n

"lateral motion. l f

In testimony whereof I have signed my name to this specification.

`Romain? F. DARBY. f 

